As in any city with a river running through it, one of the best ways to see the main sites is by boat. There is no shortage of boat tour companies here in Berlin and scenes like this are quite common in the summer months.
As you probably guessed, the big church in the background is the Berliner Dom. Visitors can climb to the top to get some nice views over the city (I've shown some previously here and here). To the left, construction continues on the somewhat controversial City Schloss project. A replica of the old city castle is being built here, it will house a museum and is tied to the Humboldt University.
It's the weekend again and that means time to relax! I will be in Paris next week, but I have scheduled a few posts on auto-pilot. See you soon! And don't forget to take a look at other skies on Skywatch.